Страница 40, ГДЗ по математике за 1 класс к тренажёру Погореловой
Вычитание вида □ − 7, □ − 8, □ − 9
\[\begin{aligned} 10 - 8 &= \textcolor{#e03131}{\mathbf{2}} & \qquad 10 - 5 - 3 &= \textcolor{#e03131}{\mathbf{2}} \\ 10 - 7 &= \textcolor{#e03131}{\mathbf{3}} & \qquad 8 - 5 - 2 &= \textcolor{#e03131}{\mathbf{1}} \\ 8 - 7 &= \textcolor{#e03131}{\mathbf{1}} & \qquad 10 - 2 - 7 &= \textcolor{#e03131}{\mathbf{1}} \\ 9 - 8 &= \textcolor{#e03131}{\mathbf{1}} & \qquad 9 - 3 - 4 &= \textcolor{#e03131}{\mathbf{2}} \\ 9 - 7 &= \textcolor{#e03131}{\mathbf{2}} & \qquad 10 - 6 - 3 &= \textcolor{#e03131}{\mathbf{1}} \\ 10 - 9 &= \textcolor{#e03131}{\mathbf{1}} & \qquad 9 - 4 - 4 &= \textcolor{#e03131}{\mathbf{1}} \end{aligned}\]
\[\begin{aligned} \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} - 8 &= 1 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} - 2 - 5 &= 1 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - 9 &= 1 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} - 5 - 3 &= 1 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} - 7 &= 2 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} - 4 - 3 &= 2 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - 7 &= 3 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{8}}\kern0.035em} - 3 - 4 &= 1 \\ \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{1}}\kern0.035em}\hspace{-0.04em}\boxed{\kern0.035em\textcolor{#e03131}{\mathbf{0}}\kern0.035em} - 8 &= 2 & \qquad \boxed{\kern0.035em\textcolor{#e03131}{\mathbf{9}}\kern0.035em} - 4 - 4 &= 1 \end{aligned}\]
